M42, Orion Nebula, Horsehead Nebula === Exposure Data === Optics: Pentax smc PENTAX 67 200mm F4, 200mm, F4 Exposure: 30secx16 1minx8 2minx8 4minx8 8minx2 @ ISO1600 Mount: Celestron CG-5 Computerized Mount Camera: Canon EOS Kiss Digital N(350D) Filter: Baa
